Change Log

0.7.0 (2019-10-13)

• Removed deprecated UIWebView integration (Apple is now rejecting apps that use UIWebView)
• Fixed deprecation warnings in Xcode 11.1

0.6.38 (2019-08-04)

• Fixed crash when using UITableView or UICollectionView in iOS 13

0.6.37 (2019-06-04)

• Updated for Xcode 11 beta

0.6.36 (2019-03-26)

• Updated for Xcode 10.2

0.6.35 (2018-12-01)

• Fixed infinite recursion bug in UICollectionViewCell layout

0.6.34 (2018-11-29)

• Fixed a crash when using UITableView or UICollectionView subclasses
• Fixed a bug with incorrect table cell layout (related to the crashing issue)
• Fixed a bug where view hierarchy was re-initialized during unmounting

0.6.33 (2018-11-16)

• Fixed a race condition caused when an @IBOutlet setter calls update() or setState() on the LayoutNode that set it
• Added a fix for width="min(auto, fixedSize)" expressions

0.6.32 (2018-10-10)

• Fixed table cell sizing bug caused by the previous fix

0.6.31 (2018-10-08)

• Fixed a bug that caused table cells in projects using Layout to collapse on iOS 12
• Fixed a spurious assertion when using an undefined parameter
• Fixed accidental sharing of reload cache between projects with same name

0.6.30 (2018-08-02)

• Fixed a retain cycle that caused LayoutNodes to leak after a bounds change or scroll event

0.6.29 (2018-08-01)

• Fixed retain cycles in LayoutExpression and LayoutNode that caused nodes and views to be leaked
• Referencing top/left/bottom/right/etc of another node by id now works correctly when useLegacyLayoutMode = false

0.6.28 (2018-07-20)

• Improved support for UIVisualEffectView (see README for details)
• Improved error messaging for misspelled function names in expressions
• Fixed spurious 'Unknown property X of UILabel in Y' error message
• Fixed infinite layout loop bug

0.6.27 (2018-06-15)

• Fixed all compiler warnings in Xcode 10 beta
• Added support for new CoreAnimation enum types in iOS 12
• Added support for iOS 12 UIScrollView.DecelerationRate type
• Added support for iOS 12 UILabel.enablesMarqueeWhenAncestorFocused property
• Layout now allows raw values to be used for enum or OptionSet expressions, which helps with backwards compatibility

0.6.26 (2018-06-07)

• Now supports building with Swift 4.2 in Xcode 10 beta
• Fixed a layout regression in version 0.6.20 for nested auto-sized views
• Layout now requires Xcode 9.3 or higher

0.6.25 (2018-06-06)

• Now supports Swift 3.4 or 4.1.5 in Xcode 10 beta (Swift 4.2 is not yet supported)
• Fixed a bug where nested Optional state properties could not be referenced in expressions
• Fixed crash when setting UIButton.attributedTitle property or using inline HTML
• Setting UIButton.attributedTitle now preserves the titleColor and titleLabel.font
• Added support for accessibilityAttributedLabel

0.6.24 (2018-05-09)

• Significantly improved performance for inline HTML and NSAttributedString expressions
• Added support for inline HTML inside UITableViewCell nodes
• Added support for nodes containing both body text and subviews
• Minor breaking changes to the RuntimeType API

0.6.23 (2018-05-03)

• Added a warning when setting UIView property expressions directly on a UIViewController node
• Improved right-to-left behavior on iOS 10 and earlier
• Default leading and trailing expressions are now supported
• Fixed blank warnings in Layout console when using new layout mode
• Performance improvements

0.6.22 (2018-04-27)

• Added a more intuitive behavior for right & bottom layout expressions (see "Legacy Layout Mode" section in README)
• Reduced initial setup time for UITableView ans UICollectionView layouts
• Font expressions can now reference static font properties defined on UIFont as named fonts

0.6.21 (2018-04-05)

• Added <children/> tag for specifying insertion point for children inside nested template files (see README for details)

0.6.20 (2018-04-04)

• Fixed UITableViewCell layout bug

0.6.19 (2018-04-04)

• Added leading and trailing layout expressions for handling right-to-left internationalization
• Added missing justified and natural values for NSTextAlignment properties
• Fixed duplicate symbols suggestions in Red Box
• Improved error messaging, especially for invalid static properties
• Fixed bug where expressions were sometimes incorrectly marked as redundant

0.6.18 (2018-02-28)

• Fixed spurious error due to the lineBreakMode property being unvailable on UITextView
• Updated Expression to 0.12.8, which improves support for custom functions
• You can now use format arguments with literal string expressions, e.g. { results within %i km(distance) }

0.6.17 (2018-02-23)

• You can now pass custom functions to LayoutNode for use in property expressions (see README for details)
• Updated Expression to 0.12.6, which adds support for inline array literals, string subscripting and more (see README for details)
• Updated LayoutTool and Layout Xcode Editor Extension to support new Expression features
• Fixed (almost) all deprecation warnings in Swift 4.1

0.6.16 (2018-01-29)

• Improved resolution logic when referencing image or color assets in bundles other than the main bundle
• Fixed top/bottom layout guide not updating correctly on iOS 9 and 10
• Fixed some edge cases when parsing expression comments and improved test coverage
• Updated Expression library to version 0.12.0

0.6.15 (2018-01-19)

• Fixed bug where safe area insets would not be updated correctly in some cases
• Duplicate instances of the same view or view controller in a LayoutNode hierarchy will now throw an error
• Duplicate outlet names in a LayoutNode hierarchy will now throw an error

0.6.14 (2018-01-11)

• Fixed longstanding bug where reloading failed to remove the old layout views/controllers from the hierarchy
• It is now safe to create LayoutNode instance on a background thread (though most methods/properties must be accessed from main thread)
• Layout will no longer directly set the UIViewController view (introduced in 0.6.11) as this caused issues with reloading
• You can now create LayoutNodes using view/controller classes instead of instances

0.6.13 (2018-01-10)

• Fixed spurious error when trying to use center.x or center.y inside an expression
• Fixed a bug where positioning views relative to their parent size would not work if parent was auto-sized
• Added warnings view to LayoutConsole. Warnings appear as a dimissable bar at the bottom of the screen
• Fixed intermittent issue where Layout would get stuck in a loading loop after reloading
• Added a mechanism for marking properties as deprecated

0.6.12 (2018-01-08)

• Fixed safeAreaInsets regression
• Fixed intermittent bug with UITabBar layout in landscape orientation

0.6.11 (2018-01-05)

• Deprecated LayoutViewController. You can now get all the same functionality by using the LayoutLoading protocol
• When loading a layout into a UIViewController, Layout will set the view directly when possible, instead of adding a subview
• Fixed infinite loading loop when attempting to load a layout whose root node is the same type as its owner
• Added a new LayoutDelegate protocol, inherited by LayoutLoading
• Added workaround for nil default backgroundColor on UIView

0.6.10 (2018-01-04)

• Localized string lookup in expressions no longer requires you to use LayoutViewController
• Fixed a bug where auto-sized views would not collapse if all their children were hidden

0.6.9 (2018-01-02)

• You can now position views using center.x and center.y instead of having to calculate the center offset yourself
• Layout now supports layer.anchorPoint, and respects its value when positioning using center.x/y expressions
• Added support for firstBaseline and lastBaseline expressions for positioning text-based views
• Referencing parent properties like top and right now transforms the value to the current node's coordinate space
• Improved property error Red Box suggestions

0.6.8 (2017-12-20)

• Fixed a regression in UITableView auto-sizing for cells and section headers
• Array literals in expression are now type checked, Layout and will throw an error if the element types don't match
• RuntimeType(_: String) is now deprecated - use RuntimeType.type(named: String) instead
• Expressions can now reference properties of nested structs or classes inside state objects

0.6.7 (2017-12-12)

• Fixed a major performance regression introduced in version 0.6.3 (caused by calling UIView.layoutIfNeeded())
• The Red Box debug console is now attached to the main window, so it no longer requires an onscreen LayoutViewController
• The Red Box is now disabled by default in production builds. You can enable it programmatically if you want it to be shown
• The Cmd-R reload shortcut now works in any view or controller, not just subclasses of LayoutViewController
• Added a more reliable fix for intermittent crashes when reloading due to a race condition in NSAttributedString logic
• It is now possible to specify contentHuggingPriority and contentCompressionResistancePriority using expressions
• Fixed a test regression in Xcode 9.2 / iOS 11.2 due to a change in UIStackView behavior
• Fixed a bug that caused an infinite update loop for certain types of expression error
• The layoutDidLoad() delegate method now receives the LayoutNode as an argument (the old method signature is deprecated)

0.6.6 (2017-12-04)

• Improved support for comma-delimited array literals in expressions, and added support for array subscripting using []
• Upgraded Expression library to 0.9.1, which fixes a number of parsing bugs and improves LayoutTool expression formatting
• Removed UIImagePickerController extension, which caused problems with AppStore Review for apps not using the photo library
• LayoutTool format now logs the number of files it has updated

0.6.5 (2017-11-29)

• Fixed a bug where accessibilityIdentifier property was reported as private or unavailable
• LayoutTool strings command now finds parameterized strings

0.6.4 (2017-11-24)

• Added ability to specify format arguments for localized string constants (see README for details)
• Fixed bug where UIAccessibility properties were reported as private or unavailable

0.6.3 (2017-11-17)

• Fixed UIStackView bug introduced in 0.6.1, and made further improvements
• Fixed some inconsistent behavior when using empty or commented-out expressions

0.6.2 (2017-11-15)

• Fixed an infinite recursion bug in the updateFrame() logic
• Disabled an assertion that sometimes fired incorrectly due to a race condition
• Fixed a bug where children added programmatically might be positioned incorrectly

0.6.1 (2017-11-14)

• Expressions that reference the contentOffset of a containing UIScrollView now update automatically when it changes
• Layout now automatically calls setNeedsLayout() on the containing view of the root LayoutNode when its frame changes
• You can now reference a macro defined in the root node of a Layout XML file from an expression on the root node
• Improved support for views using AutoLayout (i.e. where translatesAutoresizingMaskIntoConstraints = false)
• Fixed a spurious circular reference error relating to implicit height expressions
• Unhandled errors that are thrown outside of a LayoutViewController now assert instead of failing silently
• Added strings command to LayoutTool for extracting localizable string references
• Reduced setup time for a Layout view hierarchy by ~30%

0.6.0 (2017-11-09)

• Outlets can now be set using an expression as long the result is constant (see README for details)
• Error messages now include the name of the Layout XML file where the error occured
• Improved error messages, including bug fixes and better suggestions for mistyped property names
• Added childNode(withID:) and children(withID:) methods to LayoutNode for looking up child nodes
• The layoutNode property for Layout-managed table and collection view cells is now public
• Better constant analysis, which should improve performance when updating mostly-static views
• Fixed incorrect error message when expression is missing a closing brace
• Dropped support for Swift 3.1 and Xcode 8.3.3 (this was broken in the previous release anyway)
• Fixed string and character-related warnings in Xcode 9.1
• Minor breaking changes to LayoutError API

0.5.9 (2017-11-02)

• Fixed assertion failure caused by view layout triggering during a Layout update
• Fixed bug where nested XML templates sometimes failed to load correctly on second use
• Improved font name and weight matching, especially when using custom fonts
• Font weight matching will now match the closest available weight instead of requiring and exact match
• Setting the style property is now permitted for UITableViewCell subclasses
• Improved font expression documentation

0.5.8 (2017-10-31)

• Fixed layout glitch after live reloading UIStackView-based layouts
• Font expressions now support additional weights such as black and ultralight
• Minor breaking change when creating bold system fonts in font expressions. See README for details
• Unicode characters in attributedString expressions or inline HTML are no longer mangled
• Fixed bug where source file loading errors were sometimes not reported
• Fixed bug where .layout-ignore file paths could sometimes be ignored
• Improved AnyExpression implementation and test coverage
• Fixed bug with loading files in paths containing a period

0.5.7 (2017-10-26)

• Fixed bug where UIBarButtonItem.image could not be set using expressions
• Fixed spurious error when using inline HTML containing attributes
• Fixed missing file select options in filename conflict screen
• Added test coverage statistics using Slather and Coveralls
• Fixed a bug with handling of NaN values in expressions
• Fixed spurious warning in Xcode 9

0.5.6 (2017-10-24)

• Static class properties and enum cases can now be accessed via their namespace inside expressions
• Fixed an issue where errors were sometimes silently swallowed during layout initialization
• Fixed bug where UIBarButtonItem.title could not be set using expressions
• Added benchmark app for comparing Layout and AutoLayout performance

0.5.5 (2017-10-23)

• Fixed nested macro references
• Fixed spurious error when using grouped style for table views
• Fixed bugs when using overlapping property expressions such as contentSize and contentSize.width
• Improved error messages for nonexistent sub-properties of constants
• Added AutoLayout performance tests for comparison purposes
• Child index is now respected when inserting subviews

0.5.4 (2017-10-16)

• Added macros feature for reusable expressions and sub-expressions. See README for details
• Added node references, allowing expressions to reference arbitrary nodes in the layout hierarchy
• Added the Layout Xcode Extension, making Layout XML formatting available from within Xcode
• Improved support for inline HTML in templates, including support for inline HTML inside webviews
• Fixed some bugs in the LayoutTool format function

0.5.3 (2017-10-10)

• Added support for OptionSet properties
• Added basic support for array literals in expressions
• UIControl actions can now bind to any parent that implements the method, not just the Layout owner
• Added correct type information for several built-in enum and OptionSet properties
• Enhanced support for various standard controls including UISwitch and UISlider
• Fixed crash when a parameter expression references a constant or state variable of the same name

0.5.2 (2017-10-04)

• Error messages for unknown properties and enum values now display suggestions for what you might have meant
• Added enhanced support for several more standard controls, including UIActivityIndicatorView, UIWebView and WKWebView
• Errors that occur during view creation are now displayed with a specific message instead of a generic one
• Errors during UICollectionView creation no longer crash the application
• Commented out expressions no longer produce an error if the expression name is not recognized
• Fixed the tap-to-reload functionality in the Red Box error overlay
• Force reloading using Cmd-Option-R now works immediately instead of requiring an app restart to take effect
• Fixed the UIDesigner app, which was previously broken on Xcode 9
• Fixed a bug where the Layout XML parser sometimes ignored significant whitespace inside inline HTML
• Fixed issue where view sometimes failed to update correctly due to a bug in update suppression logic

0.5.1 (2017-10-02)

• Fixed a retain cycle inside LayoutNode when referencing read-only view properties inside an expression
• Having expressions for a property and one or more sub-properties (e.g. contentInset and contentInset.left) now works correctly

0.5.0 (2017-09-28)

• Added defaultExpressions property for custom views (see README for details)
• Percentages in contentSize expressions now refer to self.width instead of parent.width
• Fixed bug that caused views to fail to resize correctly when using default width/height
• Named Image and color asset expressions can now use bundle name instead of identifier
• Improved autocomplete behavior for Sublime Text
• Failing to specify a value for a custom parameter no longer causes a hard crash
• Fixed bug that caused typecheck for struct types to always fail
• Removed the readOnly availability mode for RuntimeType properties
• A width of 100% now resolves to zero if the view has no parent, instead of the current size
• Added support for all UIScrollView.contentInsetAdjustmentBehavior modes
• Removed LayoutNode.contentSize property
• Removed deprecated state property

0.4.26 (2017-09-25)

• Errors thrown during expression parsing phase no longer fail silently
• Fixed spurious error thrown when initializing UITabBar
• Improved error reporting for views conforming to LayoutLoading protocol
• Fixed crash in Collection example when running on iOS 10
• Fixed infinite loop in LayoutLoading protocol error handler
• Setting and getting directionalLayoutMargins now works on iOS 9 and above
• Getting effectiveUserInterfaceLayoutDirection now works on iOS 9 and above
• Reduced Layout framework compile time by a couple of seconds
• Updated custom component docs

0.4.25 (2017-09-22)

• Fixed regression in auto-sizing of AutoLayout-based components
• Commenting-out string-based expressions now works more intuitively (see README for details)
• Commenting-out outlet, xml or template attributes now works as you would expect
• Width and height of UIImageView are now set to auto by default

0.4.24 (2017-09-20)

• Color expressions now support named color assets in iOS 11
• It is no longer necessary to manually call update() after resizing a view programmatically
• Fixed UIScrollView.contentInsetAdjustmentBehavior error on iOS 11 when building with iOS 10 SDK
• Added caching for color literals, improving performance for commonly-used colors
• Fixed bug where Layout sometimes failed to locate source XML file when using template composition
• Fixed landscape layout for UITabBarController on the iPhone X
• Fixed a bug where UICollectionView cells failed to resize themselves after reuse
• Added support for UICollectionView.reorderingCadence property

0.4.23 (2017-09-19)

• Added full, backwards-compatible support for safe areas on iOS 11 (see README for details)
• Percentage sizes now take content insets into account when used inside a scroll view
• Added support for new iOS 11 text input properties
• Improved messaging for XML parsing errors
• Fixed a bug when using parameters with external XML references
• Removed private view properties from the Sublime Text autocomplete suggestions

0.4.22 (2017-09-10)

• Added Layout XML file autocompletion support for the Sublime Text editor (see README for details)
• Fixed a regression introduced in version 0.4.21 that caused constant values to be re-evaluated on each update
• View and view controller properties whose value has not changed are no longer re-applied on each update
• Fixed a bug where constant expressions containing true, false or nil were re-evaluated on each update
• Fixed UIStackView auto sizing, which was broken in version 0.4.18
• Clarified documentation for creating custom components
• Improved LayoutTool formatting of expressions

0.4.21 (2017-09-06)

• Fixed some race conditions in the expression setup process that sometimes resulted in spurious errors
• Fixed a bug where certain readonly properties would incorrectly be marked as settable
• The UILabel.textAlignment property is now respected when using an attributedString expression
• Paragraph spacing after <p> tags in HTML is now zero. Use <br/> to insert a blank line between paragraphs
• Added support for UILabel.lineBreakMode property

0.4.20 (2017-09-05)

• Fixed a change in the LayoutNode.bind() implementation that cuased a regression in one of our projects

0.4.19 (2017-09-05)

• Layout now compiles without modification in Xcode 9 using Swift 3.2 or 4.0
• Fixed a bug with disappearing UIAlertController buttons in iOS 9 (introduced in 0.4.14)
• Improved scrolling performance for auto-sized UITableView cells
• Improved UITableView auto height calculation when using multi-line labels
• UITableView section headers and footers no longer vanish after calling reloadData
• Fixed some bugs in parsing of keyPaths in expressions
• Improved expression parsing performance in Swift 3.2 and above

0.4.18 (2017-09-01)

• Improved support for UISearchBar, UISegmentedControl and UIStepper
• Added customization options for UINavigationController's navigation bar and toolbar
• Added customization options for UITabBarController's tab bar
• Improved API for handling view constructor arguments and made it public
• Improved documentation for view and view controller integration
• Fixed potential array bounds crash when adding views to a view controller
• Added support for class property expressions

0.4.17 (2017-08-28)

• You can now use // comments inside layout expressions
• Empty expressions are now permitted (they are treated the same as omitting the expression)
• Table cell auto height is now calculated correctly for cells using multiline textLabel
• The state property is now deprecated. Use setState() instead
• You can now call animated variants of property setters using setState(_:animated:)
• Default width is now capped at 100% of the parent width for views such as labels
• Layout now correctly handles custom classes when app name contains spaces or punctuation
• Throwing an error inside createView() for custom view subclasses no longer crashes

0.4.16 (2017-08-25)

• Fix for spurious "property unavailable" errors when using UITableView, UICollectionView or UIStackView
• Added UIStackView documentation to README

0.4.15 (2017-08-22)

• Reverted a change to constant evaluation order in 0.4.14 that caused a regression in one of our projects
• Added CONTRIBUTING.md

0.4.14 (2017-08-19)

• Cells can now access constants and state defined in their containing UITableView or UICollectionView
• UITableView and UICollectionView now support auto correctly inside width and height expressions
• Fixed a bug where errors in UITableView and UICollectionView cells were not reported
• Named color constants defined as static properties of UIColor can now be used in color expressions
• Added .layout-ignore file feature for excluding directories from XML-file search

0.4.13 (2017-08-17)

• Added support for custom parameters for XML templates
• Fixed a bug where UITableView section headers were displayed as gray bar when not specified
• UIControl actions and outlets now work correctly inside UITableView and UICollectionView cells
• Fixed bug that prevented views from other modules from being used inside UITableViewCell templates
• Improved error messaging, particularly for view properties that unavailable in Layout
• LayoutTool format now performs additional validation of expressions
• Fixed XML parsing performance regression
• Fixed bug where LayoutTool errors were returning a generic message instead of the actual error
• Improved source file lookup performance by ignoring hidden directories (such as .git)

0.4.12 (2017-08-14)

• Fixed scroll performance when using a UIScrollView as the root node in a Layout hierarchy
• Added support for UITableViewController and UICollectionViewController

0.4.11 (2017-08-14)

• Non-ascii characters such as emoji are now encoded and displayed correctly when using inline HTML
• LayoutTool rename command can now rename view or controller classes, as well as expression symbols
• Improved LayoutTool error reporting - error messages now include the file in which the error ocurred
• LayoutTool errors are now displayed in Xcode when running LayoutTool as a build phase script
• LayoutTool errors will now fail the build when running LayoutTool as a build phase script

0.4.10 (2017-08-11)

• Fixed bug that caused file conflicts to be presented as Red Box error overlay instead of the file selection overlay

0.4.9 (2017-08-10)

• Fixed assertion failure when repeatedly pressing Cmd-R in the simulator
• Fixed bug when creating subclasses of UITableView, UITableViewCell, UITableViewController or UICollectionView
• Added support for manipulating CGAffineTransform and CATransform3D properties using expressions
• Fixed some cases where value(forSymbol:) returned nil instead of throwing an error for invalid properties
• Fixed a bug where UICollectionView.collectionViewLayout.itemSize was ignored by default
• Assigning values to properties of a nil object now fails silently instead of throwing an error

0.4.8 (2017-08-09)

• Added support for the UIScrollView.contentInsetAdjustmentBehavior property introduced in iOS 11
• Property accessor now throws an error for non-existent properties instead of returning nil
• Fixed compiler errors in Xcode 9b5

0.4.7 (2017-08-07)

• First open source release!
• Added support for UICollectionView
• Improved error messaging
• Fixed a bug where AutoLayout support would not work correctly in some cases

0.4.6 (2017-08-03)

• Added support for UIStackView
• Empty XML files no longer crash Layout
• Changed styling of file disambiguation dialog to avoid confusion with Red Box error dialog
• Added Cmd-alt-R hard reset keyboard shortcut for clearing user file selection
• Unsupported HTML tags now raise an error
• Auto-sizing calculations are now more tolerant of recursive width/height references
• Fixed a circular reference crash in width/height expressions
• Fixed a bug with Red Box error not updating after a reload
• The first two subviews added to a UITableView now become the header and footer respectively
• Fixed an intermittent crash due to reloading in the middle of expression evaluation
• Added Sandbox example app

0.4.5 (2017-07-28)

• Added basic templating functionality for inheriting common layout attributes and elements
• Nested xml file references now permit the root node of the referenced file to be a subclass
• Datasource and delegate properties can now be set explicitly, or cleared with nil
• Errors thrown when evaluating constant expressions are now correctly propagated
• LayoutTool now has a rename function for renaming expression symbols inside xml files
• Better handling of implicitly-unwrapped Optionals in constants or state
• Improved support for selectors and CGRect properties
• Fixed crash in XML parser when handling a malformed layout structure
• Fixed crash in UIDesigner example

0.4.4 (2017-07-25)

• Selected source paths are now persisted between application launches
• Made the LayoutNode.bind(to:) and LayoutNode.unbind() methods public
• More helpful errors for empty expressions

0.4.3 (2017-07-20)

• Added support for UITableViewHeaderFooterView layouts for table footers and headers
• You can now define UITableViewCell and UITableViewHeaderFooterView templates inside the XML for a table
• Enabled setting the properties of a UITableViewCell.contentView and backgroundView using expressions
• Errors inside UITableViewCell layouts now appear in red box instead of being silently discarded
• Added support for percentage-based font sizes
• Improved performance when using nested XML file references by avoiding redundant view creation
• Optimized view property update performance
• Using CGColor and CGImage constants now works correctly
• Added better support for CoreFoundation and CoreGraphics types
• Further improvements to auto-sizing behavior
• Fixed bug where Red Box scrollView delegate could get bound to a custom controller

0.4.2 (2017-07-17)

• Improved auto-sizing behavior for views using both intrinsicContentSize and AutoLayout constraints
• XML Layouts are now cached in memory after first load, removing the overhead of repeated parsing
• Added performance tests for XML loading, and switched performance tests to release mode

0.4.1 (2017-07-15)

• Added support for dynamic text resizing based on user font size settings
• Improved font expression parsing. Now handles font names containing spaces, even without quotes
• Fixed an occasional glitch where auto-sized table cells would all be positioned at the top of the table

0.4.0 (2017-07-12)

• Breaking change: UIScrollView.contentInset is now taken into account when using auto in width/height
• Using auto sizing on nodes whose children depend on parent size no longer creates circular reference errors
• Spurious errors are no longer thrown during mounting of the LayoutNode due to premature evaluation
• Setup of LayoutNode is now deferred until first update, which reduces unnecessary processing
• Layout now automatically detects Obj-C setter methods and allows them to be used as expression properties
• The LayoutViewController class now conforms to the LayoutLoading protocol
• Fixed a bug introduced in version 0.3.4 that affected AutoLayout-based view sizing
• Added caching for computed properties, which improves update performance
• Fixed live reloading of strings

0.3.6 (2017-07-10)

• Conflict resolution now ignores xml or strings files inside build directory
• Made conflict resolution urls more readable by removing common path prefixes
• Fixed bug where error red box would not update after the error was fixed
• Improved support for standard Cocoa struct types
• LayoutTool now formats expressions as well as general XML structure
• Internalized the Expression library dependency, to simplify integration with LayoutTool

0.3.5 (2017-07-05)

• Added conflict resolution for when multiple strings or XML layout files have the same name
• UIControl event bindings are now more reliable, and added error detection for misspellings
• Fixed bug where XML validation errors were not displayed
• Added LayoutTool project and tests
• Restructured project and removed Northstar example

0.3.4 (2017-06-29)

• Added support for dynamic table cell height based on AutoLayout
• Improved AutoLayout integration and fixed a potential crash
• Improved performance by avoiding double-evaluation of frame properties on each layout
• Fixed a bug where a circular reference could cause a crash in some cases instead of showing a red box

0.3.3 (2017-06-27)

• Added LayoutLoading protocol, for loading arbitrary views or view controllers from XML
• LayoutVC errors are no longer passed up to parent, which fixes a bug with reloading after an error
• Significantly improved property setting performance - at least 2X faster
• Loading of nested XML files is now synchronous, avoiding a flash as subviews are loaded
• Improved default frame behavior, and added unit tests
• Added support for UITableView, UITableViewCell, and UITableViewController
• Added custom initializer support for views/controllers that require extra arguments
• Added support for layoutMargins in expressions

0.3.2 (2017-06-20)

• Reloading a nested LayoutViewController now reloads just the current controller, not the parent
• Fixed potential AutoLayout crash

0.3.1 (2017-06-13)

• You can now reference nested state or constants dictionary keys using keypaths in expressions
• Fixed a major performance regression introduced in 0.2.1, which made the UIDesigner unusable
• Added support for setting CGColor and CGImage properties on a CALayer using expressions
• Fixed string formatting when concatenating optional strings
• Improved null-coalescing operator error messaging
• Improved AnyExpression implementation to eliminate arbitrary limits on numeric values

0.3.0 (2017-06-09)

• Implicitly unwrapping a nil value inside a string expression will now throw instead of printing "nil"
• String and image expressions can now safely return nil values, all other expression types will throw
• Added nil literal value, for checking if values are nil inside an expression
• Added ?? null-coalescing operator, for proving fallback values for nil inputs in expressions
• All properties now use AnyExpression internally, meaning they can reference arbitrary types
• Braces are now permitted around any expression type, making the rules less confusing to remember

0.2.6 (2017-06-08)

• Fixed bug where custom enums would be misidentified as the wrong type
• Fixed bug with events being swallowed inside nested view controllers of LayoutViewController

0.2.5 (2017-06-07)

• Fixed bug with locating xml layout files inside a framework bundle
• Fixed Cmd-R shortcut inside LayoutViewController when presented modally

0.2.4 (2017-06-06)

• Added support for directly using localized strings from XML, and live loading of edited strings
• Added support for missing UIScrollView enum properties
• Added convenient solution for merging constants dictionaries
• Further optimized startup and update performance

0.2.3 (2017-05-29)

• Fixed bug where inherited state incorrectly shadowed local constants
• Expressions that mix math functions with non-numeric types now work as expected
• Improved expression parsing and evaluation performance

0.2.2 (2017-05-19)

• Fixed a critical bug where Bool properties were not working on 32-bit devices
• Improved performance by not recalculating property types in setters
• Added missing UIButton state setters

0.2.1 (2017-05-19)

• Setting state to the same value no longer triggers an update
• Added support for common Core Graphics geometry types such as CGPoint/CGSize
• Added support for UIEdgeInsets-type properties, and affine/3D transforms
• Passing an invalid expression name now throws an exception instead of crashing
• Using an Optional or implicitly unwrapped Optional for state no longer fails
• Improved handling of Optionals and nil values in constants and state variables
• Fixed some bugs where constants or state variable names shadowed view properties

0.2.0 (2017-05-18)

• Improved support for enums - it's no longer necessary to explicitly work with raw values (breaking change)
• Shadowing of inherited constants and state now works in a more intuitive way
• Cyclical references in expressions now correctly throw an error instead of crashing
• You can now use font names containing spaces in font expressions by wrapping them in single or double quotes

0.1.1 (2017-05-16)

• Added support for single- or double-quoted string literals inside expressions
• Fixed reloading of nested xml file references so it correctly finds the source file
• Improved auto sizing logic to better handle intrinsicContentSize values

0.1.0 (2017-05-15)

• First release